/*
* Driver for the Conexant CX23885 PCIe bridge
*
* Copyright (c) 2007 Steven Toth <stoth@linuxtv.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kmod.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include <asm/div64.h>
#include "cx23885.h"
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
MODULE_DESCRIPTION("v4l2 driver module for cx23885 based TV cards");
MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
MODULE_LICENSE("GPL");
/* ------------------------------------------------------------------ */
static unsigned int video_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
static unsigned int vbi_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
static unsigned int radio_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
module_param_array(video_nr, int, NULL, 0444);
module_param_array(vbi_nr, int, NULL, 0444);
module_param_array(radio_nr, int, NULL, 0444);
MODULE_PARM_DESC(video_nr, "video device numbers");
MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
MODULE_PARM_DESC(radio_nr, "radio device numbers");
static unsigned int video_debug;
module_param(video_debug, int, 0644);
MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
static unsigned int irq_debug;
module_param(irq_debug, int, 0644);
MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
static unsigned int vid_limit = 16;
module_param(vid_limit, int, 0644);
MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
#define dprintk(level, fmt, arg...)\
do { if (video_debug >= level)\
printk(KERN_DEBUG "%s/0: " fmt, dev->name, ## arg);\
} while (0)
/* ------------------------------------------------------------------- */
/* static data */
#define FORMAT_FLAGS_PACKED 0x01
static struct cx23885_fmt formats[] = {
{
.name = "8 bpp, gray",
.fourcc = V4L2_PIX_FMT_GREY,
.depth = 8,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "15 bpp RGB, le",
.fourcc = V4L2_PIX_FMT_RGB555,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "15 bpp RGB, be",
.fourcc = V4L2_PIX_FMT_RGB555X,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "16 bpp RGB, le",
.fourcc = V4L2_PIX_FMT_RGB565,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "16 bpp RGB, be",
.fourcc = V4L2_PIX_FMT_RGB565X,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "24 bpp RGB, le",
.fourcc = V4L2_PIX_FMT_BGR24,
.depth = 24,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "32 bpp RGB, le",
.fourcc = V4L2_PIX_FMT_BGR32,
.depth = 32,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "32 bpp RGB, be",
.fourcc = V4L2_PIX_FMT_RGB32,
.depth = 32,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "4:2:2, packed, YUYV",
.fourcc = V4L2_PIX_FMT_YUYV,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
}, {
.name = "4:2:2, packed, UYVY",
.fourcc = V4L2_PIX_FMT_UYVY,
.depth = 16,
.flags = FORMAT_FLAGS_PACKED,
},
};
static struct cx23885_fmt *format_by_fourcc(unsigned int fourcc)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(formats); i++)
if (formats[i].fourcc == fourcc)
return formats+i;
printk(KERN_ERR "%s(0x%08x) NOT FOUND\n", __func__, fourcc);
return NULL;
}
/* ------------------------------------------------------------------- */
static const struct v4l2_queryctrl no_ctl = {
.name = "42",
.flags = V4L2_CTRL_FLAG_DISABLED,
};
static struct cx23885_ctrl cx23885_ctls[] = {
/* --- video --- */
{
.v = {
.id = V4L2_CID_BRIGHTNESS,
.name = "Brightness",
.minimum = 0x00,
.maximum = 0xff,
.step = 1,
.default_value = 0x7f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.off = 128,
.reg = LUMA_CTRL,
.mask = 0x00ff,
.shift = 0,
}, {
.v = {
.id = V4L2_CID_CONTRAST,
.name = "Contrast",
.minimum = 0,
.maximum = 0xff,
.step = 1,
.default_value = 0x3f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.off = 0,
.reg = LUMA_CTRL,
.mask = 0xff00,
.shift = 8,
}, {
.v = {
.id = V4L2_CID_HUE,
.name = "Hue",
.minimum = 0,
.maximum = 0xff,
.step = 1,
.default_value = 0x7f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.off = 128,
.reg = CHROMA_CTRL,
.mask = 0xff0000,
.shift = 16,
}, {
/* strictly, this only describes only U saturation.
* V saturation is handled specially through code.
*/
.v = {
.id = V4L2_CID_SATURATION,
.name = "Saturation",
.minimum = 0,
.maximum = 0xff,
.step = 1,
.default_value = 0x7f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.off = 0,
.reg = CHROMA_CTRL,
.mask = 0x00ff,
.shift = 0,
}, {
/* --- audio --- */
.v = {
.id = V4L2_CID_AUDIO_MUTE,
.name = "Mute",
.minimum = 0,
.maximum = 1,
.default_value = 1,
.type = V4L2_CTRL_TYPE_BOOLEAN,
},
.reg = PATH1_CTL1,
.mask = (0x1f << 24),
.shift = 24,
}, {
.v = {
.id = V4L2_CID_AUDIO_VOLUME,
.name = "Volume",
.minimum = 0,
.maximum = 0x3f,
.step = 1,
.default_value = 0x3f,
.type = V4L2_CTRL_TYPE_INTEGER,
},
.reg = PATH1_VOL_CTL,
.mask = 0xff,
.shift = 0,
}
};
static const int CX23885_CTLS = ARRAY_SIZE(cx23885_ctls);
/* Must be sorted from low to high control ID! */
static const u32 cx23885_user_ctrls[] = {
V4L2_CID_USER_CLASS,
V4L2_CID_BRIGHTNESS,
V4L2_CID_CONTRAST,
V4L2_CID_SATURATION,
V4L2_CID_HUE,
V4L2_CID_AUDIO_VOLUME,
V4L2_CID_AUDIO_MUTE,
0
};
static const u32 *ctrl_classes[] = {
cx23885_user_ctrls,
NULL
};
static void cx23885_video_wakeup(struct cx23885_dev *dev,
struct cx23885_dmaqueue *q, u32 count)
{
struct cx23885_buffer *buf;
int bc;
for (bc = 0;; bc++) {
if (list_empty(&q->active))
break;
buf = list_entry(q->active.next,
struct cx23885_buffer, vb.queue);
/* count comes from the hw and is is 16bit wide --
* this trick handles wrap-arounds correctly for
* up to 32767 buffers in flight... */
if ((s16) (count - buf->count) < 0)
break;
do_gettimeofday(&buf->vb.ts);
dprintk(2, "[%p/%d] wakeup reg=%d buf=%d\n", buf, buf->vb.i,
count, buf->count);
buf->vb.state = VIDEOBUF_DONE;
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
}
if (list_empty(&q->active))
del_timer(&q->timeout);
else
mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
if (bc != 1)
printk(KERN_ERR "%s: %d buffers handled (should be 1)\n",
__func__, bc);
}
static int cx23885_set_tvnorm(struct cx23885_dev *dev, v4l2_std_id norm)
{
dprintk(1, "%s(norm = 0x%08x) name: [%s]\n",
__func__,
(unsigned int)norm,
v4l2_norm_to_name(norm));
dev->tvnorm = norm;
call_all(dev, core, s_std, norm);
return 0;
}
static struct video_device *cx23885_vdev_init(struct cx23885_dev *dev,
struct pci_dev *pci,
struct video_device *template,
char *type)
{
struct video_device *vfd;
dprintk(1, "%s()\n", __func__);
vfd = video_device_alloc();
if (NULL == vfd)
return NULL;
*vfd = *template;
vfd->minor = -1;
vfd->v4l2_dev = &dev->v4l2_dev;
vfd->release = video_device_release;
snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
dev->name, type, cx23885_boards[dev->board].name);
return vfd;
}
static int cx23885_ctrl_query(struct v4l2_queryctrl *qctrl)
{
int i;
if (qctrl->id < V4L2_CID_BASE ||
qctrl->id >= V4L2_CID_LASTP1)
return -EINVAL;
for (i = 0; i < CX23885_CTLS; i++)
if (cx23885_ctls[i].v.id == qctrl->id)
break;
if (i == CX23885_CTLS) {
*qctrl = no_ctl;
return 0;
}
*qctrl = cx23885_ctls[i].v;
return 0;
}
/* ------------------------------------------------------------------- */
/* resource management */
static int res_get(struct cx23885_dev *dev, struct cx23885_fh *fh,
unsigned int bit)
{
dprintk(1, "%s()\n", __func__);
if (fh->resources & bit)
/* have it already allocated */
return 1;
/* is it free? */
mutex_lock(&dev->lock);
if (dev->resources & bit) {
/* no, someone else uses it */
mutex_unlock(&dev->lock);
return 0;
}
/* it's free, grab it */
fh->resources |= bit;
dev->resources |= bit;
dprintk(1, "res: get %d\n", bit);
mutex_unlock(&dev->lock);
return 1;
}
static int res_check(struct cx23885_fh *fh, unsigned int bit)
{
return fh->resources & bit;
}
static int res_locked(struct cx23885_dev *dev, unsigned int bit)
{
return dev->resources & bit;
}
static void res_free(struct cx23885_dev *dev, struct cx23885_fh *fh,
unsigned int bits)
{
BUG_ON((fh->resources & bits) != bits);
dprintk(1, "%s()\n", __func__);
mutex_lock(&dev->lock);
fh->resources &= ~bits;
dev->resources &= ~bits;
dprintk(1, "res: put %d\n", bits);
mutex_unlock(&dev->lock);
}
static int cx23885_video_mux(struct cx23885_dev *dev, unsigned int input)
{
dprintk(1, "%s() video_mux: %d [vmux=%d, gpio=0x%x,0x%x,0x%x,0x%x]\n",
__func__,
input, INPUT(input)->vmux,
INPUT(input)->gpio0, INPUT(input)->gpio1,
INPUT(input)->gpio2, INPUT(input)->gpio3);
dev->input = input;
/* Tell the internal A/V decoder */
v4l2_subdev_call(dev->sd_cx25840, video, s_routing,
INPUT(input)->vmux, 0, 0);
return 0;
}
/* ------------------------------------------------------------------ */
static int cx23885_set_scale(struct cx23885_dev *dev, unsigned int width,
unsigned int height, enum v4l2_field field)
{
dprintk(1, "%s()\n", __func__);
return 0;
}
static int cx23885_start_video_dma(struct cx23885_dev *dev,
struct cx23885_dmaqueue *q,
struct cx23885_buffer *buf)
{
dprintk(1, "%s()\n", __func__);
/* setup fifo + format */
cx23885_sram_channel_setup(dev, &dev->sram_channels[SRAM_CH01],
buf->bpl, buf->risc.dma);
cx23885_set_scale(dev, buf->vb.width, buf->vb.height, buf->vb.field);
/* reset counter */
cx_write(VID_A_GPCNT_CTL, 3);
q->count = 1;
/* enable irq */
cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | 0x01);
cx_set(VID_A_INT_MSK, 0x000011);
/* start dma */
cx_set(DEV_CNTRL2, (1<<5));
cx_set(VID_A_DMA_CTL, 0x11); /* FIFO and RISC enable */
return 0;
}
static int cx23885_restart_video_queue(struct cx23885_dev *dev,
struct cx23885_dmaqueue *q)
{
struct cx23885_buffer *buf, *prev;
struct list_head *item;
dprintk(1, "%s()\n", __func__);
if (!list_empty(&q->active)) {
buf = list_entry(q->active.next, struct cx23885_buffer,
vb.queue);
dprintk(2, "restart_queue [%p/%d]: restart dma\n",
buf, buf->vb.i);
cx23885_start_video_dma(dev, q, buf);
list_for_each(item, &q->active) {
buf = list_entry(item, struct cx23885_buffer,
vb.queue);
buf->count = q->count++;
}
mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
return 0;
}
prev = NULL;
for (;;) {
if (list_empty(&q->queued))
return 0;
buf = list_entry(q->queued.next, struct cx23885_buffer,
vb.queue);
if (NULL == prev) {
list_move_tail(&buf->vb.queue, &q->active);
cx23885_start_video_dma(dev, q, buf);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
dprintk(2, "[%p/%d] restart_queue - first active\n",
buf, buf->vb.i);
} else if (prev->vb.width == buf->vb.width &&
prev->vb.height == buf->vb.height &&
prev->fmt == buf->fmt) {
list_move_tail(&buf->vb.queue, &q->active);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
prev->risc.jmp[2] = cpu_to_le32(0); /* Bits 63 - 32 */
dprintk(2, "[%p/%d] restart_queue - move to active\n",
buf, buf->vb.i);
} else {
return 0;
}
prev = buf;
}
}
static int buffer_setup(struct videobuf_queue *q, unsigned int *count,
unsigned int *size)
{
struct cx23885_fh *fh = q->priv_data;
*size = fh->fmt->depth*fh->width*fh->height >> 3;
if (0 == *count)
*count = 32;
while (*size * *count > vid_limit * 1024 * 1024)
(*count)--;
return 0;
}
static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
enum v4l2_field field)
{
struct cx23885_fh *fh = q->priv_data;
struct cx23885_dev *dev = fh->dev;
struct cx23885_buffer *buf =
container_of(vb, struct cx23885_buffer, vb);
int rc, init_buffer = 0;
u32 line0_offset, line1_offset;
struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
BUG_ON(NULL == fh->fmt);
if (fh->width < 48 || fh->width > norm_maxw(dev->tvnorm) ||
fh->height < 32 || fh->height > norm_maxh(dev->tvnorm))
return -EINVAL;
buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3;
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
if (buf->fmt != fh->fmt ||
buf->vb.width != fh->width ||
buf->vb.height != fh->height ||
buf->vb.field != field) {
buf->fmt = fh->fmt;
buf->vb.width = fh->width;
buf->vb.height = fh->height;
buf->vb.field = field;
init_buffer = 1;
}
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
init_buffer = 1;
rc = videobuf_iolock(q, &buf->vb, NULL);
if (0 != rc)
goto fail;
}
if (init_buffer) {
buf->bpl = buf->vb.width * buf->fmt->depth >> 3;
switch (buf->vb.field) {
case V4L2_FIELD_TOP:
cx23885_risc_buffer(dev->pci, &buf->risc,
dma->sglist, 0, UNSET,
buf->bpl, 0, buf->vb.height);
break;
case V4L2_FIELD_BOTTOM:
cx23885_risc_buffer(dev->pci, &buf->risc,
dma->sglist, UNSET, 0,
buf->bpl, 0, buf->vb.height);
break;
case V4L2_FIELD_INTERLACED:
if (dev->tvnorm & V4L2_STD_NTSC) {
/* cx25840 transmits NTSC bottom field first */
dprintk(1, "%s() Creating NTSC risc\n",
__func__);
line0_offset = buf->bpl;
line1_offset = 0;
} else {
/* All other formats are top field first */
dprintk(1, "%s() Creating PAL/SECAM risc\n",
__func__);
line0_offset = 0;
line1_offset = buf->bpl;
}
cx23885_risc_buffer(dev->pci, &buf->risc,
dma->sglist, line0_offset,
line1_offset,
buf->bpl, buf->bpl,
buf->vb.height >> 1);
break;
case V4L2_FIELD_SEQ_TB:
cx23885_risc_buffer(dev->pci, &buf->risc,
dma->sglist,
0, buf->bpl * (buf->vb.height >> 1),
buf->bpl, 0,
buf->vb.height >> 1);
break;
case V4L2_FIELD_SEQ_BT:
cx23885_risc_buffer(dev->pci, &buf->risc,
dma->sglist,
buf->bpl * (buf->vb.height >> 1), 0,
buf->bpl, 0,
buf->vb.height >> 1);
break;
default:
BUG();
}
}
dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
buf, buf->vb.i,
fh->width, fh->height, fh->fmt->depth, fh->fmt->name,
(unsigned long)buf->risc.dma);
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
cx23885_free_buffer(q, buf);
return rc;
}
static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
struct cx23885_buffer *buf = container_of(vb,
struct cx23885_buffer, vb);
struct cx23885_buffer *prev;
struct cx23885_fh *fh = vq->priv_data;
struct cx23885_dev *dev = fh->dev;
struct cx23885_dmaqueue *q = &dev->vidq;
/* add jump to stopper */
buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
if (!list_empty(&q->queued)) {
list_add_tail(&buf->vb.queue, &q->queued);
buf->vb.state = VIDEOBUF_QUEUED;
dprintk(2, "[%p/%d] buffer_queue - append to queued\n",
buf, buf->vb.i);
} else if (list_empty(&q->active)) {
list_add_tail(&buf->vb.queue, &q->active);
cx23885_start_video_dma(dev, q, buf);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
dprintk(2, "[%p/%d] buffer_queue - first active\n",
buf, buf->vb.i);
} else {
prev = list_entry(q->active.prev, struct cx23885_buffer,
vb.queue);
if (prev->vb.width == buf->vb.width &&
prev->vb.height == buf->vb.height &&
prev->fmt == buf->fmt) {
list_add_tail(&buf->vb.queue, &q->active);
buf->vb.state = VIDEOBUF_ACTIVE;
buf->count = q->count++;
prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
/* 64 bit bits 63-32 */
prev->risc.jmp[2] = cpu_to_le32(0);
dprintk(2, "[%p/%d] buffer_queue - append to active\n",
buf, buf->vb.i);
} else {
list_add_tail(&buf->vb.queue, &q->queued);
buf->vb.state = VIDEOBUF_QUEUED;
dprintk(2, "[%p/%d] buffer_queue - first queued\n",
buf, buf->vb.i);
}
}
}
static void buffer_release(struct videobuf_queue *q,
struct videobuf_buffer *vb)
{
struct cx23885_buffer *buf = container_of(vb,
struct cx23885_buffer, vb);
cx23885_free_buffer(q, buf);
}
static struct videobuf_queue_ops cx23885_video_qops = {
.buf_setup = buffer_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = buffer_release,
};
static struct videobuf_queue *get_queue(struct cx23885_fh *fh)
{
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
return &fh->vidq;
case V4L2_BUF_TYPE_VBI_CAPTURE:
return &fh->vbiq;
default:
BUG();
return NULL;
}
}
static int get_resource(struct cx23885_fh *fh)
{
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
return RESOURCE_VIDEO;
case V4L2_BUF_TYPE_VBI_CAPTURE:
return RESOURCE_VBI;
default:
BUG();
return 0;
}
}
static int video_open(struct file *file)
{
int minor = video_devdata(file)->minor;
struct cx23885_dev *h, *dev = NULL;
struct cx23885_fh *fh;
struct list_head *list;
enum v4l2_buf_type type = 0;
int radio = 0;
lock_kernel();
list_for_each(list, &cx23885_devlist) {
h = list_entry(list, struct cx23885_dev, devlist);
if (h->video_dev &&
h->video_dev->minor == minor) {
dev = h;
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
if (h->vbi_dev &&
h->vbi_dev->minor == minor) {
dev = h;
type = V4L2_BUF_TYPE_VBI_CAPTURE;
}
if (h->radio_dev &&
h->radio_dev->minor == minor) {
radio = 1;
dev = h;
}
}
if (NULL == dev) {
unlock_kernel();
return -ENODEV;
}
dprintk(1, "open minor=%d radio=%d type=%s\n",
minor, radio, v4l2_type_names[type]);
/* allocate + initialize per filehandle data */
fh = kzalloc(sizeof(*fh), GFP_KERNEL);
if (NULL == fh) {
unlock_kernel();
return -ENOMEM;
}
file->private_data = fh;
fh->dev = dev;
fh->radio = radio;
fh->type = type;
fh->width = 320;
fh->height = 240;
fh->fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24);
videobuf_queue_sg_init(&fh->vidq, &cx23885_video_qops,
&dev->pci->dev, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_INTERLACED,
sizeof(struct cx23885_buffer),
fh);
dprintk(1, "post videobuf_queue_init()\n");
unlock_kernel();
return 0;
}
static ssize_t video_read(struct file *file, char __user *data,
size_t count, loff_t *ppos)
{
struct cx23885_fh *fh = file->private_data;
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
if (res_locked(fh->dev, RESOURCE_VIDEO))
return -EBUSY;
return videobuf_read_one(&fh->vidq, data, count, ppos,
file->f_flags & O_NONBLOCK);
case V4L2_BUF_TYPE_VBI_CAPTURE:
if (!res_get(fh->dev, fh, RESOURCE_VBI))
return -EBUSY;
return videobuf_read_stream(&fh->vbiq, data, count, ppos, 1,
file->f_flags & O_NONBLOCK);
default:
BUG();
return 0;
}
}
static unsigned int video_poll(struct file *file,
struct poll_table_struct *wait)
{
struct cx23885_fh *fh = file->private_data;
struct cx23885_buffer *buf;
unsigned int rc = POLLERR;
if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
if (!res_get(fh->dev, fh, RESOURCE_VBI))
return POLLERR;
return videobuf_poll_stream(file, &fh->vbiq, wait);
}
mutex_lock(&fh->vidq.vb_lock);
if (res_check(fh, RESOURCE_VIDEO)) {
/* streaming capture */
if (list_empty(&fh->vidq.stream))
goto done;
buf = list_entry(fh->vidq.stream.next,
struct cx23885_buffer, vb.stream);
} else {
/* read() capture */
buf = (struct cx23885_buffer *)fh->vidq.read_buf;
if (NULL == buf)
goto done;
}
poll_wait(file, &buf->vb.done, wait);
if (buf->vb.state == VIDEOBUF_DONE ||
buf->vb.state == VIDEOBUF_ERROR)
rc = POLLIN|POLLRDNORM;
else
rc = 0;
done:
mutex_unlock(&fh->vidq.vb_lock);
return rc;
}
static int video_release(struct file *file)
{
struct cx23885_fh *fh = file->private_data;
struct cx23885_dev *dev = fh->dev;
/* turn off overlay */
if (res_check(fh, RESOURCE_OVERLAY)) {
/* FIXME */
res_free(dev, fh, RESOURCE_OVERLAY);
}
/* stop video capture */
if (res_check(fh, RESOURCE_VIDEO)) {
videobuf_queue_cancel(&fh->vidq);
res_free(dev, fh, RESOURCE_VIDEO);
}
if (fh->vidq.read_buf) {
buffer_release(&fh->vidq, fh->vidq.read_buf);
kfree(fh->vidq.read_buf);
}
/* stop vbi capture */
if (res_check(fh, RESOURCE_VBI)) {
if (fh->vbiq.streaming)
videobuf_streamoff(&fh->vbiq);
if (fh->vbiq.reading)
videobuf_read_stop(&fh->vbiq);
res_free(dev, fh, RESOURCE_VBI);
}
videobuf_mmap_free(&fh->vidq);
file->private_data = NULL;
kfree(fh);
/* We are not putting the tuner to sleep here on exit, because
* we want to use the mpeg encoder in another session to capture
* tuner video. Closing this will result in no video to the encoder.
*/
return 0;
}
static int video_mmap(struct file *file, struct vm_area_struct *vma)
{
struct cx23885_fh *fh = file->private_data;
return videobuf_mmap_mapper(get_queue(fh), vma);
}
/* ------------------------------------------------------------------ */
/* VIDEO CTRL IOCTLS */
static int cx23885_get_control(struct cx23885_dev *dev,
struct v4l2_control *ctl)
{
dprintk(1, "%s() calling cx25840(VIDIOC_G_CTRL)\n", __func__);
call_all(dev, core, g_ctrl, ctl);
return 0;
}
static int cx23885_set_control(struct cx23885_dev *dev,
struct v4l2_control *ctl)
{
dprintk(1, "%s() calling cx25840(VIDIOC_S_CTRL)"
" (disabled - no action)\n", __func__);
return 0;
}
static void init_controls(struct cx23885_dev *dev)
{
struct v4l2_control ctrl;
int i;
for (i = 0; i < CX23885_CTLS; i++) {
ctrl.id = cx23885_ctls[i].v.id;
ctrl.value = cx23885_ctls[i].v.default_value;
cx23885_set_control(dev, &ctrl);
}
}
/* ------------------------------------------------------------------ */
/* VIDEO IOCTLS */
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx23885_fh *fh = priv;
f->fmt.pix.width = fh->width;
f->fmt.pix.height = fh->height;
f->fmt.pix.field = fh->vidq.field;
f->fmt.pix.pixelformat = fh->fmt->fourcc;
f->fmt.pix.bytesperline =
(f->fmt.pix.width * fh->fmt->depth) >> 3;
f->fmt.pix.sizeimage =
f->fmt.pix.height * f->fmt.pix.bytesperline;
return 0;
}
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
struct cx23885_fmt *fmt;
enum v4l2_field field;
unsigned int maxw, maxh;
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
if (NULL == fmt)
return -EINVAL;
field = f->fmt.pix.field;
maxw = norm_maxw(dev->tvnorm);
maxh = norm_maxh(dev->tvnorm);
if (V4L2_FIELD_ANY == field) {
field = (f->fmt.pix.height > maxh/2)
? V4L2_FIELD_INTERLACED
: V4L2_FIELD_BOTTOM;
}
switch (field) {
case V4L2_FIELD_TOP:
case V4L2_FIELD_BOTTOM:
maxh = maxh / 2;
break;
case V4L2_FIELD_INTERLACED:
break;
default:
return -EINVAL;
}
f->fmt.pix.field = field;
v4l_bound_align_image(&f->fmt.pix.width, 48, maxw, 2,
&f->fmt.pix.height, 32, maxh, 0, 0);
f->fmt.pix.bytesperline =
(f->fmt.pix.width * fmt->depth) >> 3;
f->fmt.pix.sizeimage =
f->fmt.pix.height * f->fmt.pix.bytesperline;
return 0;
}
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx23885_fh *fh = priv;
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
int err;
dprintk(2, "%s()\n", __func__);
err = vidioc_try_fmt_vid_cap(file, priv, f);
if (0 != err)
return err;
fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
fh->width = f->fmt.pix.width;
fh->height = f->fmt.pix.height;
fh->vidq.field = f->fmt.pix.field;
dprintk(2, "%s() width=%d height=%d field=%d\n", __func__,
fh->width, fh->height, fh->vidq.field);
call_all(dev, video, s_fmt, f);
return 0;
}
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
strcpy(cap->driver, "cx23885");
strlcpy(cap->card, cx23885_boards[dev->board].name,
sizeof(cap->card));
sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
cap->version = CX23885_VERSION_CODE;
cap->capabilities =
V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING |
V4L2_CAP_VBI_CAPTURE;
if (UNSET != dev->tuner_type)
cap->capabilities |= V4L2_CAP_TUNER;
return 0;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (unlikely(f->index >= ARRAY_SIZE(formats)))
return -EINVAL;
strlcpy(f->description, formats[f->index].name,
sizeof(f->description));
f->pixelformat = formats[f->index].fourcc;
return 0;
}
#ifdef CONFIG_VIDEO_V4L1_COMPAT
static int vidiocgmbuf(struct file *file, void *priv,
struct video_mbuf *mbuf)
{
struct cx23885_fh *fh = priv;
struct videobuf_queue *q;
struct v4l2_requestbuffers req;
unsigned int i;
int err;
q = get_queue(fh);
memset(&req, 0, sizeof(req));
req.type = q->type;
req.count = 8;
req.memory = V4L2_MEMORY_MMAP;
err = videobuf_reqbufs(q, &req);
if (err < 0)
return err;
mbuf->frames = req.count;
mbuf->size = 0;
for (i = 0; i < mbuf->frames; i++) {
mbuf->offsets[i] = q->bufs[i]->boff;
mbuf->size += q->bufs[i]->bsize;
}
return 0;
}
#endif
static int vidioc_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p)
{
struct cx23885_fh *fh = priv;
return videobuf_reqbufs(get_queue(fh), p);
}
static int vidioc_querybuf(struct file *file, void *priv,
struct v4l2_buffer *p)
{
struct cx23885_fh *fh = priv;
return videobuf_querybuf(get_queue(fh), p);
}
static int vidioc_qbuf(struct file *file, void *priv,
struct v4l2_buffer *p)
{
struct cx23885_fh *fh = priv;
return videobuf_qbuf(get_queue(fh), p);
}
static int vidioc_dqbuf(struct file *file, void *priv,
struct v4l2_buffer *p)
{
struct cx23885_fh *fh = priv;
return videobuf_dqbuf(get_queue(fh), p,
file->f_flags & O_NONBLOCK);
}
static int vidioc_streamon(struct file *file, void *priv,
enum v4l2_buf_type i)
{
struct cx23885_fh *fh = priv;
struct cx23885_dev *dev = fh->dev;
dprintk(1, "%s()\n", __func__);
if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
return -EINVAL;
if (unlikely(i != fh->type))
return -EINVAL;
if (unlikely(!res_get(dev, fh, get_resource(fh))))
return -EBUSY;
return videobuf_streamon(get_queue(fh));
}
static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct cx23885_fh *fh = priv;
struct cx23885_dev *dev = fh->dev;
int err, res;
dprintk(1, "%s()\n", __func__);
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (i != fh->type)
return -EINVAL;
res = get_resource(fh);
err = videobuf_streamoff(get_queue(fh));
if (err < 0)
return err;
res_free(dev, fh, res);
return 0;
}
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
dprintk(1, "%s()\n", __func__);
mutex_lock(&dev->lock);
cx23885_set_tvnorm(dev, *tvnorms);
mutex_unlock(&dev->lock);
return 0;
}
static int cx23885_enum_input(struct cx23885_dev *dev, struct v4l2_input *i)
{
static const char *iname[] = {
[CX23885_VMUX_COMPOSITE1] = "Composite1",
[CX23885_VMUX_COMPOSITE2] = "Composite2",
[CX23885_VMUX_COMPOSITE3] = "Composite3",
[CX23885_VMUX_COMPOSITE4] = "Composite4",
[CX23885_VMUX_SVIDEO] = "S-Video",
[CX23885_VMUX_TELEVISION] = "Television",
[CX23885_VMUX_CABLE] = "Cable TV",
[CX23885_VMUX_DVB] = "DVB",
[CX23885_VMUX_DEBUG] = "for debug only",
};
unsigned int n;
dprintk(1, "%s()\n", __func__);
n = i->index;
if (n >= 4)
return -EINVAL;
if (0 == INPUT(n)->type)
return -EINVAL;
memset(i, 0, sizeof(*i));
i->index = n;
i->type = V4L2_INPUT_TYPE_CAMERA;
strcpy(i->name, iname[INPUT(n)->type]);
if ((CX23885_VMUX_TELEVISION == INPUT(n)->type) ||
(CX23885_VMUX_CABLE == INPUT(n)->type))
i->type = V4L2_INPUT_TYPE_TUNER;
i->std = CX23885_NORMS;
return 0;
}
static int vidioc_enum_input(struct file *file, void *priv,
struct v4l2_input *i)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
dprintk(1, "%s()\n", __func__);
return cx23885_enum_input(dev, i);
}
static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
*i = dev->input;
dprintk(1, "%s() returns %d\n", __func__, *i);
return 0;
}
static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
dprintk(1, "%s(%d)\n", __func__, i);
if (i >= 4) {
dprintk(1, "%s() -EINVAL\n", __func__);
return -EINVAL;
}
mutex_lock(&dev->lock);
cx23885_video_mux(dev, i);
mutex_unlock(&dev->lock);
return 0;
}
static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qctrl)
{
qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
if (unlikely(qctrl->id == 0))
return -EINVAL;
return cx23885_ctrl_query(qctrl);
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctl)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
return cx23885_get_control(dev, ctl);
}
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctl)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
return cx23885_set_control(dev, ctl);
}
static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
if (unlikely(UNSET == dev->tuner_type))
return -EINVAL;
if (0 != t->index)
return -EINVAL;
strcpy(t->name, "Television");
t->type = V4L2_TUNER_ANALOG_TV;
t->capability = V4L2_TUNER_CAP_NORM;
t->rangehigh = 0xffffffffUL;
t->signal = 0xffff ; /* LOCKED */
return 0;
}
static int vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *t)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
if (UNSET == dev->tuner_type)
return -EINVAL;
if (0 != t->index)
return -EINVAL;
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct cx23885_fh *fh = priv;
struct cx23885_dev *dev = fh->dev;
if (unlikely(UNSET == dev->tuner_type))
return -EINVAL;
/* f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; */
f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
f->frequency = dev->freq;
call_all(dev, tuner, g_frequency, f);
return 0;
}
static int cx23885_set_freq(struct cx23885_dev *dev, struct v4l2_frequency *f)
{
if (unlikely(UNSET == dev->tuner_type))
return -EINVAL;
if (unlikely(f->tuner != 0))
return -EINVAL;
mutex_lock(&dev->lock);
dev->freq = f->frequency;
call_all(dev, tuner, s_frequency, f);
/* When changing channels it is required to reset TVAUDIO */
msleep(10);
mutex_unlock(&dev->lock);
return 0;
}
static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct cx23885_fh *fh = priv;
struct cx23885_dev *dev = fh->dev;
if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
return -EINVAL;
if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
return -EINVAL;
return
cx23885_set_freq(dev, f);
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int vidioc_g_register(struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
if (!v4l2_chip_match_host(®->match))
return -EINVAL;
call_all(dev, core, g_register, reg);
return 0;
}
static int vidioc_s_register(struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
if (!v4l2_chip_match_host(®->match))
return -EINVAL;
call_all(dev, core, s_register, reg);
return 0;
}
#endif
/* ----------------------------------------------------------- */
static void cx23885_vid_timeout(unsigned long data)
{
struct cx23885_dev *dev = (struct cx23885_dev *)data;
struct cx23885_dmaqueue *q = &dev->vidq;
struct cx23885_buffer *buf;
unsigned long flags;
cx23885_sram_channel_dump(dev, &dev->sram_channels[SRAM_CH01]);
cx_clear(VID_A_DMA_CTL, 0x11);
spin_lock_irqsave(&dev->slock, flags);
while (!list_empty(&q->active)) {
buf = list_entry(q->active.next,
struct cx23885_buffer, vb.queue);
list_del(&buf->vb.queue);
buf->vb.state = VIDEOBUF_ERROR;
wake_up(&buf->vb.done);
printk(KERN_ERR "%s/0: [%p/%d] timeout - dma=0x%08lx\n",
dev->name, buf, buf->vb.i,
(unsigned long)buf->risc.dma);
}
cx23885_restart_video_queue(dev, q);
spin_unlock_irqrestore(&dev->slock, flags);
}
int cx23885_video_irq(struct cx23885_dev *dev, u32 status)
{
u32 mask, count;
int handled = 0;
mask = cx_read(VID_A_INT_MSK);
if (0 == (status & mask))
return handled;
cx_write(VID_A_INT_STAT, status);
dprintk(2, "%s() status = 0x%08x\n", __func__, status);
/* risc op code error */
if (status & (1 << 16)) {
printk(KERN_WARNING "%s/0: video risc op code error\n",
dev->name);
cx_clear(VID_A_DMA_CTL, 0x11);
cx23885_sram_channel_dump(dev, &dev->sram_channels[SRAM_CH01]);
}
/* risc1 y */
if (status & 0x01) {
spin_lock(&dev->slock);
count = cx_read(VID_A_GPCNT);
cx23885_video_wakeup(dev, &dev->vidq, count);
spin_unlock(&dev->slock);
handled++;
}
/* risc2 y */
if (status & 0x10) {
dprintk(2, "stopper video\n");
spin_lock(&dev->slock);
cx23885_restart_video_queue(dev, &dev->vidq);
spin_unlock(&dev->slock);
handled++;
}
return handled;
}
/* ----------------------------------------------------------- */
/* exported stuff */
static const struct v4l2_file_operations video_fops = {
.owner = THIS_MODULE,
.open = video_open,
.release = video_release,
.read = video_read,
.poll = video_poll,
.mmap = video_mmap,
.ioctl = video_ioctl2,
};
static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
.vidioc_g_fmt_vbi_cap = cx23885_vbi_fmt,
.vidioc_try_fmt_vbi_cap = cx23885_vbi_fmt,
.vidioc_s_fmt_vbi_cap = cx23885_vbi_fmt,
.vidioc_reqbufs = vidioc_reqbufs,
.vidioc_querybuf = vidioc_querybuf,
.vidioc_qbuf = vidioc_qbuf,
.vidioc_dqbuf = vidioc_dqbuf,
.vidioc_s_std = vidioc_s_std,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
.vidioc_queryctrl = vidioc_queryctrl,
.vidioc_g_ctrl = vidioc_g_ctrl,
.vidioc_s_ctrl = vidioc_s_ctrl,
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
.vidiocgmbuf = vidiocgmbuf,
#endif
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register,
#endif
};
static struct video_device cx23885_vbi_template;
static struct video_device cx23885_video_template = {
.name = "cx23885-video",
.fops = &video_fops,
.minor = -1,
.ioctl_ops = &video_ioctl_ops,
.tvnorms = CX23885_NORMS,
.current_norm = V4L2_STD_NTSC_M,
};
static const struct v4l2_file_operations radio_fops = {
.owner = THIS_MODULE,
.open = video_open,
.release = video_release,
.ioctl = video_ioctl2,
};
void cx23885_video_unregister(struct cx23885_dev *dev)
{
dprintk(1, "%s()\n", __func__);
cx_clear(PCI_INT_MSK, 1);
if (dev->video_dev) {
if (-1 != dev->video_dev->minor)
video_unregister_device(dev->video_dev);
else
video_device_release(dev->video_dev);
dev->video_dev = NULL;
btcx_riscmem_free(dev->pci, &dev->vidq.stopper);
}
}
int cx23885_video_register(struct cx23885_dev *dev)
{
int err;
dprintk(1, "%s()\n", __func__);
spin_lock_init(&dev->slock);
/* Initialize VBI template */
memcpy(&cx23885_vbi_template, &cx23885_video_template,
sizeof(cx23885_vbi_template));
strcpy(cx23885_vbi_template.name, "cx23885-vbi");
dev->tvnorm = cx23885_video_template.current_norm;
/* init video dma queues */
INIT_LIST_HEAD(&dev->vidq.active);
INIT_LIST_HEAD(&dev->vidq.queued);
dev->vidq.timeout.function = cx23885_vid_timeout;
dev->vidq.timeout.data = (unsigned long)dev;
init_timer(&dev->vidq.timeout);
cx23885_risc_stopper(dev->pci, &dev->vidq.stopper,
VID_A_DMA_CTL, 0x11, 0x00);
/* Don't enable VBI yet */
cx_set(PCI_INT_MSK, 1);
if (TUNER_ABSENT != dev->tuner_type) {
struct v4l2_subdev *sd = NULL;
if (dev->tuner_addr)
sd = v4l2_i2c_new_subdev(&dev->v4l2_dev,
&dev->i2c_bus[1].i2c_adap,
"tuner", "tuner", dev->tuner_addr);
else
sd = v4l2_i2c_new_probed_subdev(&dev->v4l2_dev,
&dev->i2c_bus[1].i2c_adap,
"tuner", "tuner", v4l2_i2c_tuner_addrs(ADDRS_TV));
if (sd) {
struct tuner_setup tun_setup;
tun_setup.mode_mask = T_ANALOG_TV;
tun_setup.type = dev->tuner_type;
tun_setup.addr = v4l2_i2c_subdev_addr(sd);
v4l2_subdev_call(sd, tuner, s_type_addr, &tun_setup);
}
}
/* register v4l devices */
dev->video_dev = cx23885_vdev_init(dev, dev->pci,
&cx23885_video_template, "video");
err = video_register_device(dev->video_dev, VFL_TYPE_GRABBER,
video_nr[dev->nr]);
if (err < 0) {
printk(KERN_INFO "%s: can't register video device\n",
dev->name);
goto fail_unreg;
}
printk(KERN_INFO "%s/0: registered device video%d [v4l2]\n",
dev->name, dev->video_dev->num);
/* initial device configuration */
mutex_lock(&dev->lock);
cx23885_set_tvnorm(dev, dev->tvnorm);
init_controls(dev);
cx23885_video_mux(dev, 0);
mutex_unlock(&dev->lock);
return 0;
fail_unreg:
cx23885_video_unregister(dev);
return err;
}
